Optimizing control loops is a tradeoff between loop performance, robustness and valve wear. The Performance Summary lets the user see all these at a glance: performance increase, robustness increase, valve travel, and valve reversal indices. Each index is a comparison of the current PID parameters and measurement filter compared to new values. The performance increase shows how much better the loop will respond to upsets. The robustness increase compares the sensitivity to process changes. Reducing valve travel and reversals will decrease wear and increase the life of the valve. ExperTune Inc. 1020 James Drive, Suite A Hartland, WI, 53029